.login_container{
    background-color: aliceblue;
    height: 100vh;
    position: relative;
    // 中间登录盒子
    .login_box {
        width: 450px;
        height: 280px;
        background-color: #fff;
        border-radius: 3px;
        position: absolute;
        left:50%;
        top:50%;
        transform: translate(-50%,-50%);

        // logo
        .logo_box {
            height: 60px;
            width: 60px;
            border: 1px solid #eee;
            border-radius: 50%;
            padding: 10px;
            box-shadow: 0 0 10px #ddd;
            position: absolute;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: #fff;
            img {
              width: 100%;
              height: 100%;
              border-radius: 50%;
              background-color: #eee;
            }
        }
        // 登录表单
        .login_form {
            position: absolute;
            top: 60%;
            transform: translateY(-50%);
            width: 100%;
            padding: 0 20px;
            box-sizing: border-box;
            .btns{
                text-align: center;
                display: flex;
                justify-content: space-evenly;
            }
         }
    }
}